libc++ used to leak unistd.h, causing ioctl and close to be leaked. It
doesn't anymore, so actually include this.
Change-Id: I510301a71ea0d9526a4862a634c7726053baa8f8
-#include <stdlib.h>
#include <arpa/inet.h>
#include <linux/if.h>
#include <netinet/in.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
#include <sys/socket.h>
-
-#include "utils/RWLock.h"
+#include <unistd.h>
#include <atomic>
#include <mutex>
#include <thread>
+#include "utils/RWLock.h"
+
// Defined only in ifc_utils.c, in the kernel, and in the NDK.
#ifndef SIOCKILLADDR
#define SIOCKILLADDR 0x8939